void nxbe_closewindow(struct nxbe_window_s *wnd)
{
FAR struct nxbe_state_s *be;
#ifdef CONFIG_DEBUG
if (!wnd)
{
return;
}
#endif
be = wnd->be;
/* The background window should never be closed */
DEBUGASSERT(wnd != &be->bkgd);
/* Is there a window above the one being closed? */
if (wnd->above)
{
/* Yes, now the window below that one is the window below
* the one being closed.
*/
wnd->above->below = wnd->below;
}
else
{
/* No, then the top window is the one below this (which
* can never be NULL because the background window is
* always at the true bottom of the list
*/
be->topwnd = wnd->below;
}
/* There is always a window below the one being closed (because
* the background is never closed. Now, the window above that
* is the window above the one that is being closed.
*/
wnd->below->above = wnd->above;
/* Redraw the windows that were below us (and may now be exposed) */
nxbe_redrawbelow(be, wnd->below, &wnd->bounds);
/* Then discard the window structure. Here we assume that the user-space
* allocator was used.
*/
kumm_free(wnd);
}
void nxbe_lower(FAR struct nxbe_window_s *wnd)
{
FAR struct nxbe_state_s *be = wnd->be;
FAR struct nxbe_window_s *below;
/* If the window is already at the bottom, then there is nothing to do */
if (!wnd->below || wnd->below == &be->bkgd)
{
return;
}
/* Remove the window from its current position in the list */
wnd->below->above = wnd->above;
/* Was it at the top of the display? */
if (wnd->above)
{
/* No... it was in the middle somewhere */
wnd->above->below = wnd->below;
}
else
{
/* Yes.. set the new top window */
be->topwnd = wnd->below;
be->topwnd->above = NULL;
}
/* Remember the window that was just below us */
below = wnd->below;
/* Then put the lowered window at the bottom (just above the background window) */
wnd->below = &be->bkgd;
wnd->above = be->bkgd.above;
be->bkgd.above = wnd;
/* Redraw the windows that were below us (but now are above) */
nxbe_redrawbelow(be, below, &wnd->bounds);
}
void nxbe_setsize(FAR struct nxbe_window_s *wnd,
FAR const struct nxgl_size_s *size)
{
struct nxgl_rect_s bounds;
#ifdef CONFIG_DEBUG
if (!wnd)
{
return;
}
#endif
/* Save the before size of the window's bounding box */
nxgl_rectcopy(&bounds, &wnd->bounds);
/* Add the window origin to the supplied size get the new window bounding box */
wnd->bounds.pt2.x = wnd->bounds.pt1.x + size->w - 1;
wnd->bounds.pt2.y = wnd->bounds.pt1.y + size->h - 1;
/* Clip the new bounding box so that lies within the background screen */
nxgl_rectintersect(&wnd->bounds, &wnd->bounds, &wnd->be->bkgd.bounds);
/* We need to update the larger of the two rectangles. That will be the
* union of the before and after sizes.
*/
nxgl_rectunion(&bounds, &bounds, &wnd->bounds);
/* Report the new size/position */
nxfe_reportposition(wnd);
/* Then redraw this window AND all windows below it. Having resized the
* window, we may have exposed previoulsy obscured portions of windows
* below this one.
*/
nxbe_redrawbelow(wnd->be, wnd, &bounds);
}
void nxbe_setposition(FAR struct nxbe_window_s *wnd,
FAR const struct nxgl_point_s *pos)
{
struct nxgl_rect_s before;
struct nxgl_rect_s rect;
#ifdef CONFIG_DEBUG
if (!wnd)
{
return;
}
#endif
/* Back out the old window origin position from the bounding box */
nxgl_rectoffset(&rect, &wnd->bounds, -wnd->bounds.pt1.x, -wnd->bounds.pt1.y);
/* Add the new window origin into the bounding box */
nxgl_rectcopy(&before, &wnd->bounds);
nxgl_rectoffset(&wnd->bounds, &rect, pos->x, pos->y);
/* Get the union of the 'before' bounding box and the 'after' bounding
* this union is the region of the display that must be updated.
*/
nxgl_rectunion(&rect, &before, &wnd->bounds);
nxgl_rectintersect(&rect, &rect, &wnd->be->bkgd.bounds);
/* Report the new size/position */
nxfe_reportposition(wnd);
/* Then redraw this window AND all windows below it. Having moved the
* window, we may have exposed previoulsy obscured portions of windows
* below this one.
*/
nxbe_redrawbelow(wnd->be, wnd, &rect);
}
